While all the U.S. publishers/eBook stores remain reluctant to embrace the ePub format, the UK, and Europe in general, is really forging forward with its adoption. The latest to release an eBook store selling ePub books (plus PDF and other popular formats), is the UK academic publisher, Blackwell.
In addition to the 45,000 titles they have launched with (in partnership with the eBook wholesaler Gardners), Blackwell will also be stocking the BeBook eReader, a reader which is becoming quite popular among UK users.
It’s uncertain as to whether they will use any DRM (I can’t imagine they won’t) but at the moment the BeBook does not suopport the Adobe (ePub/PDF) DRM. However, there was a recent annoucment from Endless Ideas, who sell the BeBook, that their new WiFi BeBook reader will be supporting ePub DRM. Perhaps there will soon be a firmware update for the current model.